Search for the next occurrence of the previously searched text.
See the information about the Edit menu's
Find Again
command for more information.
If there was no previous search in the document in the
current session, then this button is disabled.

Go to the top of the home page of the document. If a home
page was not specified when the document was converted or
if the document format does not support a home page specification,
then this results in a jump to the top of the first page
of the document.

The Location/Go To tool bar button serves two purposes. The first is
to show the current location in the document, expressed either as the
current location within the current page expressed as a percentage
value or as the current page number, depending on the
Location option setting.
The second purpose is for activating the Go To dialog.
See the information about the View menu's
Go To command
for more information about the Go To dialog.